Hi can I please get assistance with 6 and 7! thank you

1 (In x)2 6. Find the volume of a solid, whose base is the region bounded by the graph of g(:L') = a: and the m-axis (see diagram), and its cross sections, perpendicular to the x-axis, are squares (with one side in the base). 7. How much work is needed to pump all the water out of a cylindrical tank with a height of 10 meters and a radius of 5 meters? The water is pumped to an outow pipe 15 meters above the bottom of the tank. ( Note: Water weighs 9800 Newton per meter cubed. )